(vulgar, UK, Australia, New Zealand, slang) An instance of taking the piss. / (vulgar, UK, Australia, New Zealand, slang) A parody.

(idiomatic) To act on one's own authority, without asking for permission.

To go hiking. / (idiomatic, often imperative) To go away; to leave or depart.

(idiomatic) To attempt or try.

(idiomatic, chiefly in the negative) To like, accept or condone.

To decline rapidly. / (idiomatic, boxing) To feign a knockout in order to lose intentionally. / (idiomatic) To lose or fail intentionally.

To go out onto the playing field. / To begin military operations. / (horse racing) To stake one's money against the favourite, taking the chances of the field against the chance of one horse.

(idiomatic, vulgar, colloquial) To defecate. / (idiomatic, vulgar, colloquial, UK) To fail or malfunction.

(intransitive, of a crowd of people) To gather together in the public streets of a town or city to show communal solidarity in either celebration or opposition. / (intransitive) To rampage or riot.

(idiomatic, informal, sports, especially boxing) To willingly lose a match, as in a fixed fight.